LET Command 1 LET Assign a value to a data reference. LET dest_data_ref = src_data_ref src_data_ref LET dest_data_ref = num_data_ref calculation-operator/function num_data_ref LET dest_data_ref = CALL logic_name logic_argument LET dest_data_ref = CALCDATE src_data_date_ref1 DIFF src_data_date_ref2 LET dest_data_date_ref = CALCDATE src_data_date_ref + - DAYS WEEKS MONTHS num_data_ref LET dest_data_ref = CALCDATE src_data_date_ref DOW WEEKNUM The LET command assigns a value to a data reference. This can be a simple copy, the result of a (date) calculation, a concatenation or the return value from a called logic block. Date calculations can be initiated by using the CALCDATE argument. The following calculations are possible: DIFF: This gives the number of days between 2 dates. 0 means the dates are the same, < 0 means the left date is earlier than the right date and > 0 means the left date is later than the right date. +/- DAYS/WEEKS/MONTHS: add/subtract n number of DAYS/WEEKS/MONTHS from the given date and return the result as a date. DOW: Returns the Day Of Week (0=Sunday, 6=Saturday). WEEKNUM: Returns the number of the week of the year of the date given. dest_data_ref Data item which will get a value assigned to. This can either be a simple copy from another data reference, or this can be the result of a calculation. The data item has to be an existing data item and can not be a read-only item like a string for instance. dest_data_date_ref Data item which will get a date value assigned to. This will be the result of a date calculation. The data item has to be an existing data item and can not be a read-only item like a string for instance. src_data_ref Data item where the value will be copied from. The data item can either be an existing data item, a string or a numeric value. src_data_date_ref Data item being a valid date in a date format where the value will be copied from. The data item can either be an existing data item, a string or a numeric value. num_data_ref Numeric data item where the value will be used in a (date) calculation. The data item can either be an existing data item or a numeric value. logic_name Name or single data reference holding a name of a logic block to be called. The returned value of this logic block will be moved into the dest_data_ref. logic_argument Optional argument(s) of the called logic block. calculation operator > >>>]]> >=]]> >= >>>= &= |= ^= **=]]> calculation function abs acos asin atan atan2 cos cosh exp int float log log10 prime sinh sqrt tan tanh calculation functions values need to be surrounded by round brackets. ie: sin(1234) . . . . . . LET L-String = "Hello " V-Name "." . . . LET L-Counter = 10 . . . LET L-Total = L-SubTotal + L-Tax . . . LET L-OrderNumber = CALL GetOrderNumber . . . LET L-RenewalDate = CALCDATE L-ExpiryDate + MONTHS 1 . . . LET L-WeekNumber = CALCDATE L-CurrentDate WEEKNUM . . . . . . CALL